Preheat the oven to 400° and spray a baking sheet with cooking spray or line with parchment paper.

Mix the baking mix and sugar in a large mixing bowl, cut the buttery stick into small dices, add in and work in with your fingers until it is small crumbs. Stir in the vanilla and orange juice until a soft dough forms.

Dish out into 12 biscuits (I used a large disher) and bake for 12 to 15 minutes, or until turning golden on top. Take out and let cool mostly on the tray.

Stir the glaze until smooth and then drizzle over the biscuits till coated, let set up.